At the end of the 5th WASMAN partners meeting the team visited the landfill "Sierra Sur" where the organic waste is treated. The plant collects waste from 213.796 inhabitants and produce energy (3000 Kwh/year) through biomethanisation. This is the 4th visit to waste plants following the visit to the incinerator in Nimes (France); the ecological island in Cogoleto (Italy) and to the landfill in Larnaca (Cyprus). Once again the exchange of experiences and technologies, comparison of different waste management systems in partners countries has contributed to enhance the know-how of WASMAN partners